Shock-absorber.



W. N. BORDER & S. P. LOVE.

SHOCK ABSORBER.

APPLICATION FILED MAR.14,1911.

Patented Aug. 22, 1911.

1 O 4 We v .00 6 if 4 LIZ 6W. 2 (LW M a UNITED STATES PATENT OFFICE.

WILLIAM N. BORDER AND SAMUEL I. LOVE, OF TEEN-TON, MISSOURIi.

mo e s;

SHOCK-ABSORBER.

n specification.

"lhisinvention relates to shock absorbers for automobiles and other vehicles. the object iilview being to n'ovide simple, et'l'ective and reliable means for taking up and absorbing the shocks. jolts and jars in the runninQof the vehicle. eliminating the objectionable vibrations customarily produced. and evenly and uniformly distributing the various strains so as to reduce the liability of injury to the vehicle.

The invention consists of the features of construction, combination and arrangement of parts, hereinafter fully described and claimed, reference being bad to the accompanying drawings in which 2 Figure 1 is a side elevation. showing the application of the invention to a portion of the frame and running gear of an automobileJ Fig. 2 an enlarged detail section on the line 2-2 of Fig. 1. Fig. 3 is a vertical longitudinal section through one of the secondary cushioningcylinders. Fig. 4. is a similar view through one of the primary cushioning cylinders. Fig. 5 is an enlarged detail View of one of the systems of levers.

Referring to the drawings, 1 designates one of the side bars of the frame or chassis of an automobile or similar vehicle, and 2 the wheels at one side of the vehicle, which wheels are mounted. in the usual manner upon transverse shafts 3. We have shown the running gear at one side only of the vehicle sufficiently to illustrate the invention, as the construction is duplicated at each side of the vehicle.

Secured to the front and rear ends of the bar 1 are suspension springs it, and to the intermediate portion of each of these springs is attached an upstanding bracket or hanger 4 carrying a fulcrum or bolt 5, on which are pivotally mounted the upper convergent ends of a pair of levers G and 7. The lower ends of these levers 6 and 7 are pivotally connected by fulcrum pins or bolts 8 and 9' with the upper divergent ends of a pair of levers 10 and 11, pivotally mounted at their lower or convergent ends upon a pivotal bolt or pin 12 carried by a bracket or sleeve Specification of Letters Patent. Patented Aug, 22, 1911,

Application filed March 14, 1911.

Serial No. 614,354.

13 mounted on the contiguous end of the adjacent axle I3.

Pivotally connected at one end of the pivot pin or bolt 8 is a link or connecting rod 13, pivotally attached at its opposite or inner, end to a block or head it slidably mounted in a casing or guideway 15 secured to the bar I. Said block or head or casing l t is provided with a socket 16 slidably rccciving the outer end 17 of a piston rod 18. which slides through a suitable bearing 19 mounted on the casing 15 and has its portion within the casing inclosed by a cushioning spring 20. arranged between the bearing member '15.) and the inner end of the block or head lit.

The inner end of the rod 18 carries a pis ton head 21 movable in a cylinder 22, the rod extending through a stutting box 23 in the outer end of said cylinder. The inner end or head 24- of the cylinder is provided with a check valve air inlet with which conununicatcs an air feed pipe 2ti, through which air is admitted to be drawn into the cylinder on the outward movement of the piston head. it being understood. of course, that the pipe 26 may communicate with any source of air supply under pressure. .xlso connected with the head 21- is a check valve exhaust pipe 2". through which the air may discharge for the inward movement of the piston;

It will be observed that the construction described provides a diamond-shaped yielding frame or system of toggle levers connecting each suspension spring 3 with the contiguous end of the adjacent axle 3, through which a relative yielding or cushioning motion between the axle and the frame or chassis is permitted, also that the cushionint devices associated with each set of levers are disposed between the same and the center of the bar 1 and it will thus be seen that the yielding or shock-absorbing con nections between the axle and frame will co opc'atc with the spring of the vehicle to preventany sudden shock or jar from eX- crtine' its full force on the spring or f 11110. Should the tendency of the shock be to throw the vehicle body upward, the force will contract the system of lovers by drawing the :t'ulcrmn points 8 and. 9 inwardly toward each other. whereby the shock will be taken up. On the other hand, should the shock tend to throw the body of the vehicle downward, the system of levers would be cushioning device to co prnnsry cusnioning dc c io absorb any up all of the ordinzt'y vibi. the, air (ZlTlShlODlUg dex extended in s ion gitudii direction, or the iulcrum points 8 2nd reed s 1 )9 operate with the spring 3 up and absorb the shock. Should s. vlOltflii' lfl'Wlk Ward movement of the vesicle body ensue, movement of the vehicle body, and that of the piston cylinder provide e secondary with said heavier shocks, by which all strains to which the vehicle body may be subjected will be absorbed in. a simple and effective manner.

It will be untlei's'tcz'id that tho swings 3 and the primary cushioning dcvic will be 'sufiicientunder ordiiiiuiiy condition to take tions and that ",S are not brought into play 1111i 1 tine vcliicle Jody subjectccl to heavy shocks l ordinary conditions to dsn'ieg e the body or chassis.

Having thus described our invention, We clain1:-

1. In vehicle, a frame, s suspension spring curried thereby, an axle, a system of toggle levers connecting the spring with the axle, a casing, an clcmc '1 slidsloly I stunted int-he casing, s spt'iz "it-11in on posing the sham ,iii veinentof s v element,srodconncctmg -d element- With the toggle lover, a pneumatic cylinder, and a piston operating tl ccein end sdeptedto be engaged and moved by said sliding element upon a predetermined preliminary movement of the let-ten 2.1111 a vehicle, a frame, s suspension spring carried hereby, an axle, a system of toggle levers connecting the spring with the liable under side, a casing, an elementslidably mounted in the casing, a spring Within the casing opposing the slldlng movement of said cleniaent, a rodconnecting suld element With-the t w said cylinder, s casing receiving the outer end of the piston rod, a.- sliding head mow table on the end of the rod and adapted in engage the same upon a predetermined. $1 ing movement, a cushioning spring for ire and a connection between the sliding head and the system of toggle levers.

4. in a vehicle, a frame, 2i suspension spring carried thereby, an axle, a system of toggle, levers connecting the vspring and axle, a pneumatic cushioning device including a piston, a cushioning spring, a primery cushioning member movable against stile resistance of said. spring and adapted to engage the piston to impart movement thereto when said spring is compressed, and a connection bctween said member and the system of toggle levers.

In testimony whereof We efiix our signatures in presence of two Witnesses.

lVlLLIAM N. BORDER. SAMUEL P. LOVE. Witnesses:

W. BAILEY,

1 LAUNDY.

misting the movement of the sliding head;

o 'gle levers, a pneumatic cylinder, and a 

